From UABgrid Documentation
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2007 Hardware and Gromacs 3.x
Note: The Gromacs 3.x code base was severely limited in spanning multiple compute nodes. The limit for 1GigE network fabrics was 4 nodes. The following performance data is provided for historical reference only and does not reflect performance of the Gromacs 4.x code base currently install on Cheaha.
Two identical 4 CPU Gromacs runs and the jobs spread out as follows based on current queue load (the new nodes are using Infiniband, the old TCP for message passing):
Dell Blades: 4 cpu job running on 4 compute nodes
Job ID: 71566 Submitted: 14:11:40 Completed: 17:06:03 Wall Clock: 02:54:23
NODE (s) Real (s) (%) Time: 10462.000 10462.000 100.0 2h54:22 (Mnbf/s) (GFlops) (ns/day) (hour/ns) Performance: 238.044 16.164 4.129 5.812
Verari: 4 cpu job running on 2 compute nodes
Job ID: 71567 Submitted: 14:11:44 Completed: 23:13:01 Wall Clock: 09:01:17
NODE (s) Real (s) (%) Time: 32473.000 32473.000 100.0 9h01:13 (Mnbf/s) (GFlops) (ns/day) (hour/ns) Performance: 76.705 5.208 1.330 18.040